Use wait_for_requests to wait all JS request

...assets/javascripts/vue_shared/vue_resource_interceptor.js

...ogs/unreleased/wait-for-ajax-handling-all-js-requests.yml

features/steps/dashboard/event_filters.rb

features/steps/dashboard/todos.rb

features/steps/group/members.rb

features/steps/group/milestones.rb

features/steps/project/builds/artifacts.rb

features/steps/project/forked_merge_requests.rb

features/steps/project/merge_requests.rb

features/steps/project/merge_requests/acceptance.rb

features/steps/project/merge_requests/revert.rb

features/steps/project/project.rb

features/steps/project/project_milestone.rb

features/steps/project/snippets.rb

features/steps/project/source/browse_files.rb

features/steps/project/source/markdown_render.rb

features/steps/shared/active_tab.rb

features/steps/shared/diff_note.rb

features/steps/shared/note.rb

features/steps/shared/paths.rb